TRICHORD
Tri"chord, n. Etym: [Gr. Tri-) + , or string.] (Mus.)
Defn: An instrument, as a lyre or harp, having three strings.
TRICHOSCOLICES Trich`o*scol"i*ces, n. pl. Etym: [NL., from Gr. tri`x, tricho`s, hair + skw`lhx a worm.] (Zoöl.)
Defn: An extensive group of wormlike animals characterized by being more or less covered with cilia.
TRICHOTOMOUS
Tri*chot"o*mous, a. Etym: [See Trichotomy.]
Defn: Divided into three parts, or into threes; three-forked; as, a trichotomous stem. Martyn.
TRICHOTOMY Tri*chot"o*my, n. Etym: [Gr. tri`cha threefold, in three parts + te`mnein to cut or divide: cf. F. trichotomie.]
Defn: Division into three parts.
TRICHROIC
Tri*chro"ic, a.
Defn: Exhibiting trichroism; pleochroic; pleochroism.